/**********
This library is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 3 of the License, or (at your
option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)

This library is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
more details.

You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
**********/
// "liveMedia"
// Copyright (c) 1996-2018 Live Networks, Inc.  All rights reserved.
// A source that consists of multiple byte-stream files, read sequentially.
// (The input is an array of file names, with a terminating 'file name' of NULL.)
// C++ header

#ifndef _BYTE_STREAM_MULTI_FILE_SOURCE_HH
#define _BYTE_STREAM_MULTI_FILE_SOURCE_HH

#ifndef _BYTE_STREAM_FILE_SOURCE_HH

#include "ByteStreamFileSource.hh"

#endif

class ByteStreamMultiFileSource : public FramedSource {
public:
    static ByteStreamMultiFileSource *
    createNew(UsageEnvironment &env, char const **fileNameArray,
              unsigned preferredFrameSize = 0, unsigned playTimePerFrame = 0);
    // "fileNameArray" is a pointer to an array of (char const*) file names, with
    // A 'file name' of NULL indicating the end of the array

    Boolean haveStartedNewFile() const { return fHaveStartedNewFile; }
    // True iff the most recently delivered frame was the first from a newly-opened file

protected:
    ByteStreamMultiFileSource(UsageEnvironment &env, char const **fileNameArray,
                              unsigned preferredFrameSize, unsigned playTimePerFrame);
    // called only by createNew()

    virtual ~ByteStreamMultiFileSource();

private:
    // redefined virtual functions:
    virtual void doGetNextFrame();

private:
    static void onSourceClosure(void *clientData);

    void onSourceClosure1();

    static void afterGettingFrame(void *clientData,
                                  unsigned frameSize, unsigned numTruncatedBytes,
                                  struct timeval presentationTime,
                                  unsigned durationInMicroseconds);

private:
    unsigned fPreferredFrameSize;
    unsigned fPlayTimePerFrame;
    unsigned fNumSources;
    unsigned fCurrentlyReadSourceNumber;
    Boolean fHaveStartedNewFile;
    char const **fFileNameArray;
    ByteStreamFileSource **fSourceArray;
};

#endif
